FREQUENCY ANALYSIS SYSTEM AND METHOD FOR DETECTING IMPROPER ACTUATION SYSTEM PERFORMANCE AND ELEMENT OPERATION
First Claim
1. A dither frequency analysis system for use in monitoring an actuation control system for actuating one or more actuation elements, the dither frequency analysis system comprising:
- a controller for directing a control signal to an actuation driver, the control signal including a dither frequency;
one or more sensors for receiving and relaying a signal downstream from the one or more actuation elements, the downstream signal including the dither frequency; and
a frequency analysis device for receiving and analyzing the downstream dither frequency or directing the same to the controller;
wherein the controller evaluates the analyzed downstream dither frequency and evaluates whether such analyzed downstream dither frequency indicates proper or improper actuation system operation.
1 Assignment
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Accused Products
Abstract
Dither frequency analysis systems include a controller for directing a control signal and a dither frequency to an actuation driver. One or more sensors are used for receiving and relaying a signal downstream from an actuation element, which downstream signal includes the dither frequency. A frequency analysis device receives and analyzes the downstream dither frequency and directs the same to a controller that is configured to evaluate the analyzed downstream dither frequency, and evaluate whether the same indicates proper or improper actuation system operation. The downstream dither frequency is analyzed and evaluated at a frequency of less than about one second, and the frequency analysis device analyzes downstream dither frequencies in the range of from about 50 to 500 hertz. The system can include algorithms and test sequences to address and/or further evaluate improper actuation system operation.
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Citations
20 Claims
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1. A dither frequency analysis system for use in monitoring an actuation control system for actuating one or more actuation elements, the dither frequency analysis system comprising:
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a controller for directing a control signal to an actuation driver, the control signal including a dither frequency; one or more sensors for receiving and relaying a signal downstream from the one or more actuation elements, the downstream signal including the dither frequency; and a frequency analysis device for receiving and analyzing the downstream dither frequency or directing the same to the controller; wherein the controller evaluates the analyzed downstream dither frequency and evaluates whether such analyzed downstream dither frequency indicates proper or improper actuation system operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A dither frequency analysis system used with an actuation control system for controlling one or more movable elements in a turbocharger engine system comprising:
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a turbocharger assembly comprising a center housing comprising a shaft rotatably disposed therein, a compressor housing attached to one end of the center housing and including a compressor impeller disposed therein and attached to one end of the shaft, a turbine housing attached to an opposite end of the center housing and including a turbine wheel disposed therein and attached to an opposite end of the shaft, and one or more movable members disposed within the turbocharger assembly; an actuator that is connected to the one or more movable members; a controller for directing a control signal to an actuation driver that operates the actuator, the control signal including a dither frequency; one or more sensors for receiving and relaying a signal downstream from the actuator and one or more movable members, the downstream signal including the dither frequency; and a frequency analysis device for receiving and analyzing the downstream dither frequency and directing the same to the controller; wherein at least on of the controller or frequency analysis device evaluates the analyzed downstream dither frequency and evaluates whether such analyzed downstream dither frequency indicates proper or improper operation of the actuation control system or the one or more movable members. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for evaluating the operation of an actuation system and its functional elements by monitoring a dither frequency, the method comprising the steps of:
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providing a control signal to an actuation driver in an actuation control system and that is connected to one or more moveable members, wherein the control signal includes a dither frequency; receiving the dither frequency downstream from the actuation driver and one or more moveable member; and analyzing the downstream dither frequency to determine whether the downstream dither frequency indicates proper or improper operation of the actuation control system, or the one or more movable members. - View Dependent Claims (18, 19, 20)
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Specification